Nail-machine



(No Model.)

J. S. BLACKBURN 8v P. G. BARTHOLOMEW.

NAIL MACHINE.

Patented Jan. 19, 1892.

N58858: W/M,

ATTORNEYS.

cm, mom-um wuumumu, n. c.

UNITED STATES PATENT OFFICE.

JOSEPH S. BLACKBURN AND FRANK G. BARTHOLOME\V, OF SALEM, OHIO.

NAIL-MACHINE.

SPECIFICATION forming part of Letters Patent No. 467,362, dated January19, 1892.

Application filcd May 14, 1891.

To all whom it may concern.-

Be it known that we, JosEPH S. BLACKBURN and FRANK G. BARrHoLoMEw, bothof Salem, in the county of Oolumbiana and State of Ohio, have inventednew and useful Improvements in Nail-Machines, of which the following isa full, clear, and exact description.

The object of the invention is to provide certain new and usefulimprovements in nailmachines, whereby the nail after being formed with ahead and out by the knives is readily broken off the wire anddischarged.

The invention consists of certain parts and details and combinations ofthe same, as will. be hereinafter fully described, and then pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in Which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 is a side elevation of the improvement, with parts in section,and Fig. 2 is a horizontal section of the same.

The nail-machine of any improved construction is provided with the usualfixed anvil or die A, on which operates the hammer B, fitted to slide inthe usual manner in the frame 0 of the nail-machine.

Abolt D is arranged between two beams E of the main frame 0, the saidbolt extending longitudinally below the end of the hammer B, as isplainly shown in Fig. 1. The bolt D is formed at one end with a point D,adapted to engage one of the beams, the other end of the bolt beingthreaded, and on this threaded end screws a nut D adapted to abutagainst the other beam E, as is plainly shown in Fig. 2, so that thebolt is securely held in place by the two beams. The middle of the boltD is formed with the pivot part D forming the fulcrum for an arm F,extending upward into the path of the hammer B, as is plainly shown inFig. l. The arm F is formed on its pivot end with a slot F for beingreadily slipped over the pivot part D of the bolt D. The sidewise motionof the arm F is prevented by nuts G, screwing on the bolt at either sideof the said arm, as is plainly shown in Fig. 2.

One side of the arm F is engaged by the mid- Serial No. 392,700. (Nomodel.)

dle U-shaped part of the spring ll, formed with coils H, arranged aroundthe bolt D, the ends of the coils being formed into the parts H abuttingagainst the under side of the beams of the main frame 0, as is plainlyshown in Fig. 1. The spring Il thus has the the pivot part D of the boltD, at the same time holding the free end of the said arm in contact withthe inner end of the hammer B when the latter is in an outermostposition, as shown in Fig. 1.

\Vhen the hammer B is moved to the fixed anvil or die A to form the headon the wire, then the free end of the arm F rests against one side ofthe hammer, as shown in dotted lines in Fig. 1. When the hammer iswithdrawn after finishing the head, the arm F follows the movement ofthe hammer caused by the action of the spring H, and when the hammer Bmoves again toward the anvil and the finished nail has been cut by theknives in the usual manner then the inward motion of the said hammerforces the free end of the arm F against the nail, so that the latter isbroken off or detached from the wire and at the same time forceddownward and thrown off the machine. At the time the hammer B is inposition for forming the'head on the nail the end of the arm F restsagainst the under side of the hammer, as previously explained, and shownin dotted lines in Fig. 1.

Having thus fully described our invention, we claim as new and desire tosecure by Letters Patent- 1. In a nailing-machine, the combination, withthe movable hammer, of an arm pivoted on the nailing-machine andextending at its free end to the end of the hammer. so that the latteractuates the said arm, and a spring pressing on the said arm,substantially as shown and described.

2. In a nailing-machine, the combination, with a bolt adapted to besecured to the frame of the nailing-machine, of an arm pivoted on thesaid bolt and a spring held on the said bolt and pressing on the saidarm, substantially as shown and described.

3. The combination,with the movable hamtendency to hold the arm F incontact withv mer, of the transverse bolt D below the hamboltandpressing the arm F upward, substan ner, provided with a bearing-point Don its tialiy as set forth. headed end, the pivot portion D between itsJOSEPH S. BLACKBURN. ends, and the nut D on its opposlte end, the 1 armF, operated by the hammer and haying a FRANK BARTHOLOMLVV' slot F at itslower end receiving the part D Witnesses: of the bolt, the nuts G atopposite sides of J. W. J oHNsoN,

the arm, and the spring H, coiled about the FRANK MERGER.

